Lite Flites QRB is designed with the ability to open under tension up to 150 kg. This is a very important safety feature. When designing the QRB we always focused on the safety of the rescue man as well as the helicopter crew. With the Lite Flite QRB the rescue man is always able to release himself in an emergency situation. If the rescue man get into problems, entangled on a wreckage or stuck between rocks in the mountains, the helicopter has a problem.
In this situation the crew could be forced to cut the cable in order not to jeopardize the helicopter and the crew. If this happens for a helicopter equipped with a single hoist only, the helicopter is not able to get back to rescue the rescue man, and far the less the casualty.